Dyestuffs and process of making same



Patented Apr. 12, 19 27.

- UNITED STATES- PATENT? OFFICE.

FRITZ STBAUB, OF BASE L, AND HERMANN SGHNEIDER OF RIEHEN, NEARJBASEL,

SWITZERLAND, ASSIGNORS. TO SOCIETY OF CHEMICAL INDUSTRY IN BASLE, OF

' BASEL, SWITZERLAND.

, DYESTUI'FS AND PROCESS OF MAKING SAME.

No Drawing. Application filed March 6,1925, Serial No. 13,626, and in Switzerland March 20, 1924.- I

, The invention relates to new dyestufls and intermediate products, it comprises the new dyestuffs as well as the process of making same and the material dyed or printed with the new dyestufi's.

ing ammonia to react on the sultone and finally reducing the product thus obtained, the sequence of the operations being such that the sulphonation precedes the .introduction of the N(O) residue and that this latter operation occurs prior to the reduction, diazotizing the l-hydroxynaphtha lene-8-sulpl1amide-2-amino-4-sulphonic thus obtained, coupling it with coupling components and treating finally the o-l1ydroxyazo dyestuffs thus obtained with-a group of compounds comprising the salts, oxides andhydroxides of a group of metals comprising copper and chromium. According to their properties, these new dyestuffs may be employed either as acid dyestufi's, or mordant 3o dyestuffs or printing colors; they form redbrown to black powders, dissolving in water to solutions with greenish-blue colorations and red-orange to blackish-blue coloration by addition of caustic soda, dyeing wool in an acid bath bluish-red to greenish-blue fast tints;

The following examples illustrate the invention but in no way limit it.

Example 1.

Into acooled mixture of 2500 parts of turning sulphuric acid containing 24 per cent of SO and 1500 parts of sulphuric acid of 97 per centstrength, cooled to 0 0., are gradually introduced, while stirring, 3100 parts of 1,8-naphthsultone. The temperature'is first allowed to rise to 20 C. and the mass is kept in a condition in which it can be stirred by adding 1500 parts of fuming sulphuric acid containing 24: per cent'SO and 1000 p'arts of sulphuric acid of 97 per cent strength. The sulphonation is completed by heating to 40 C. As soon as this has been achieved,'which can be ascertained by seeing whether a-test dissolves clearly in water, the mass is cooled to 20 C., and nitrated by the gradual addition'ofa mixture of 1023 parts of nitric acid, 1940 parts of sulphuric acid and 687 parts of water. After stirring for some time at 2025 C. the whole is introduced into 2500 parts of ice water and the solution thus formed is filtered from some insoluble lay-products and from the filtrate 1,8-naphthsultone-2-nitro- 4-sulphonic acid is precipitated in the form of its sodium salt byladding common salt.

The said sodium salt is a yellow powdersoluble in Water to a greenish yellow solution, the colour ofwhich passes to orange-on addition of alkalies. l I

4700 partsof the "said sodium salt, best in the form of the freshly precipitated paste,

' are introduced into 4500 parts of cooled amis allowed to rise to 2030 C.

monia of 25 per cent strength and the mixture is stirred for some time at 1015 C. It forms a thin orange suspension, which is then mixed with so much dilute sulphuric acid that it becomes distinctly acid with. mineral acid. The l-hydroxynaphthalene- S-sulphamide-Q-nitro-4-sulphonic acid thus precipitated in the form of its sodium salt constitutes a greenish is filtered and dried.

The sodium 1 hydroxynaphthalene S sulphamide-Q-nitrol-sulphonate is a bright yellow powder; which dissolves in cold water comparatively sparingly, but with alkalies it forms orange solutions.'

4900 parts of this sodium salt are introyellow magma which duccd into a. mixture of 10.000 parts of ice water, 2500 parts of iron turnings and 500 parts of a. sodium bisulphite solution of 40 per cent strength. The n'iixtur'e is stirred at first in the cold and then thetemperature After some time the nitro-compound completely disappears. The mixture is then diluted with about an equal volume of water and heated This acid forms a bright powder some- 2 what soluble in water. With nitrous acid it yields a bright yellow, somewhat sparingly soluble. diazo-compound.. I

The same compound can be produced by first reducing 1,8-naphthsultone-Q-nitro-4- sulphonic acid to the corresponding 1,8- .naphthsultone-Q-amino-4-sulphonic acid and then converting the latter compound into the sulphamide by means of ammonia.

Thenew compound corresponds with the following formula:

Nrnms' on OaH Example 2.

223 parts of l-hydroxynaphthalene-8-sul- 'phamide are introduced into a mixture of 600 parts of concentrated sulphuric acid then poured into ice water and the sodium 1-hydroxyna1ihthalene-8-snlphamide 4t sulphonate which has been formed is completely precipitated by adding common salt.

303 parts of this sodium salt are dissolved in .4000 parts of water and 55 parts of anhydrous sodium. carbonate. The solution is mixed with parts of'sodinm nitrite and then at 05 C. with 1000 parts oi sulphuric acid of 10 per cent strength. There separates l-hydroxynaphthalene 8 sulphaniidc- 2-nitroso-4-sulphonic acid in the form of a yellow brown precipitate, which on drying becomes a yellow green powder. It is sparingly soluble in water but dissolves in concentrated sulphuric acid to a green yellow solution and in dilute'sodium carbonate solution to an'orange solution.

250 parts of iron turnings are mixed with a little water and while stirring there are introduced gradually and alternately 333 parts of 1-hydroxynaphthalene-8-sulphan'r ide-Q-nitroso--sulphonicaeid and 800 parts of sulphuric acid. in such a manner that the reaction of the mixture remains teebly acid and the ten'iperature is kept between 30 and 40 C. When the reduction is complete the mass is neutralized. while hot,- with sodium carbonate solution and filtered. After cooling. sodium sulphate is separated by filtra- "tion and thel-hydroxynaphthalene-8ssulpha1nide-2-amino-4-sulphonic acid is isolated from the solution by acidifying.

35.1parts of the diam-compound of l-hyd roxynaphth alene S-sulphamide-2-aminolsulphonic acid in the, form of a paste of v about 30 per cent strength. Stirring is continued at the said temperature until the diazo-compound has disappeared. The mixture is then diluted with 300 parts of water and neutralized with mineral acid which should not be too dilute: the dyestufi? is finally precipitated by adding common salt.

The properties of the new dyestufi' are to be learned from the table which follows.

. I Example 4. 1 47 ,3 parts of the dyestuif obtained as described in Example .3 are introduc ed into 400 parts of boiling water and the whole is mixed with 400 parts of a solution'of chromium fluoride corresponding with 16 parts of C130 After boiling for a further time in a reflux apparatus the liquid is evaporated somewhat and the chromed dyestuifformed is precipitated by addition of common salt. It dyes wool in an acid bath very level reddish marine-blue tints which are very fast to light, fulling and alkali.

Like dyestuffs are obtained with other agents which field chromium.

The following table sets forth the chief properties of a number of dyestuffs obtain- 15 able in accordance with this invention.

Azo-dyestufl.

- Colourofthesolutionln- Dyeings on- ,Appear v Coupling component 3 of C e ry. v I oneen- Water. Caustic Wool. 1.32? 5. 55%; dyestuti. soda lye. sulglimnc chromed. coppered. on cotton I a-naphthol Blaelrish Blue-red. Red-vio- Blue. Brownish Destroyed. Dirty I powder. let. red-viobrownlet. violet.

II fi-naphthol Blaekish Blue-red. Blue-red. Red-Vio- Red-vio- Blue. bronze. let. I let. 1

1H fifl-dichloro-a-napbthol Dark,-; Red-vio- Yiolet. Blackish Ited-vio- Destroyed. Violet bronze let. blue. le powder."

2,3-hydroxynaphthoic acid..-.... Blacklsh. Violet. Blackish Violet. Blue-vio- Blue,de Blue-vio- I violet. let. stroyed. let.

va-hydroxy-1,8-naphthalenedicar- Blackish. Blue-red. Blue-red. Blue. Dull deep Green- Blue. Pure indi- 'boxylic acid. I violet. blue. go blue.

Vl .l-hydroxynaphthelene-ksul- Blackish. Red-vio- Red-vio- Blue-vio- Red-vio- Blue, de- Red-riophonic acid. let. let. let. let; stroyed let.

VlI 2-hydroxyna hthalene-e-sul Violet- Red-vio- Red-vio- Brownlsh Red-vio- Destroyed. Violet.

phonic eel black. let. let. e l-violet.

VIII l-phenyl-a-methyl-b-pyrazolone.. Orange. 'Orange. Orange- Orange- Orange. Blue-red, Orahte- .brown. red. destroyed. brown.

IX l-(3-sulphan1l do)- lienyl-3- Brown. Orange. Orange. Red-or- Orange. Blue-red, Brownmethyr--pyrazo one. enge. destroyed. red.

X 1- -nltro)-phenyl-3-niethyl-.' Orange.- Orange. Beddish Bed-or- Orange. Blue-red, Blue-red.

pyrazolone; orange. ange. destroyed.

X1 Resoreylic acid-.- Blaekish. ;Bordeaux. Violet. I Blue-red. Rgddish Destroyed. Violet. Violet.

. rown.

00011 Red- Orange. Red-or- Red-or- Orange. Destroyed. Blue-red. x11 brown. I enge. anze. v

N H bHr-CO on f E Blackishi Red-on Blue-red. Red. Red Destroy brown. anze. brown. X111 i 0H l Chromium compounds. Copper compounds.

. Colour of the solu- Colour of the solution in- Dycmg tion in- Cnupling component. PD pp ance ofonce oi Dyeing the drlfl Dilute the dry Dilute on wool.

d t lfll \Y'itor caustic 011 wool In cotton ll gfrl Water caustic soda. printing. yob soda.

lye. lye.

l a-naphthol Blaolaish Blu e-v io- Rod-,vio- Blacklsh Blaokish Rod-vio- Red-vio- Dull-vio powder. let. blue. powder. let. let. let.

II fl-nzmlltllol Blaokish. Blue. Violot. Rodllish Blackisll. ltod-vlo- Red-'vio- Red-lily dark let. let.

blue.

III 5,8-dichloro-a-naphtliol lllookish, Greenish Violet. Groenish .llluckisll. Violot. Blackish'violot.

blue. blue. blue.

IV 2,3-hydroxynuphthoioacid Bluokish. lllu'o. Violet. lllue. Blue. Bluckish. iRfdt-vio- Blue-red. Violet.

V 3-hydroxy- ,S-mpllthalonediour llluckish. Blue. Violet. llluo,' Pure Blucklsll. Violet. Violet. Blue.

hoxylic acid. gi'eeuindigo ish. blue.

\1 l-hydroxymtphtlmlouo-l-sulllltlcklsll. llluo. Rod-\io- Blue. llluckisll. Red-vio- Rod-vio- \iolot.

' phonic acid. let. let. lot.

v11 2-hydroxynnphthulouo-G-sul- \iolot- Blue. Rcd-violllllo. Violetltod-vio- Red-VII) ltml-vio' phonicacid, brown. 1 lot. brown. let. lot. let.

\Ill l-phauyl-x-methyl-fi-pymzolone. Rom Blue-rod. .lIed-or- Bluish- Rod- Rod. Roll. BlllBlOll.

- lu-ow n. augo. rose. brown.

'IX 1-(3-sulphamido)-pllonyl-3- BIOWIh Blue-red. Red-on- Bluisli llolilied. Cd. Blue-rod.

methyl-fi-pyruzolone. bordoaux. ungo. roso. brown.

X l-(3-nitro)-pl1onyl-3unethyl-5- Reddish Blue-rod. Red. Bluish- Brown. lied. Blue-rod. pyrazolone. brown. rose.

Xl- Resorcylic acid blackish. Violet. Ihladt-vio- Blue. Violet. Bluukisl1. lliadt-vlo- RTd-Vio- Violet.

o 0 ot.

CH3 1 I 1 (3001:! RGtl- Blue-red. Red-or- Blue-red. Blue-red. Red- Rod. Roll. Blue-ro l, XII bro u. :mge. brown.

l N -0H.

LHz-CO Blaokish. Blue-red. Blue-red. Violet. Blaoklsh. Ited-vlo- Blue-rod. Violet.

responds most probably with the following the following formula;

formula the The azodyestufl' I(from a naphthol) 001'- the azodycst-ull' II (from fi-napl ihol) with ozodyestuif VIII (from 1'-phenyl-; l-

' methyl--pyrazolone) mula NIIz-Sp: OH

01H and the azodyestufi XIII (from meta-hydroxyphenol) with the following formula NHr-SO:

What we claim is:

1. As step in the process for the manufacture of metal compounds derived from o-hydroxyazodyestufi's the herein described vprocess for the manufacture of l hy'droxynaphthalene-8-sul hamide-2 amino 4 sulphonic acid by sulp onating the 1,8-naphthsultone,

treating it with agents adapted to introduce intoits molecule the N(O) x residue, wherein :1: stands for a whole number smaller than 3, then causin ammonia toreact onthe sultone and finafiy reducing the product'thus obtained, the sequence of the operations being thus that the sulphonation precedes the introduction of the -N (O) residue and that this latter operation occurs prior to the reduction.

2. As step in the process forthe manufacture of metal compounds derived from o-hydroxyazodyestufis the herein described process for the manufacture of o-hydroxyazodyecomponents.

ing the o-hydroxyazodyestufl's from diazotized l-hydroxynaphthalene-8 sulphamide-2- amino--sulphonie acid and coupling comwith the following foracidbath dark red-blue to ponents with the oxides,-hydrox ides and salts of trivalent chromium.

5. The herei n described process for the manufacture of chromium compounds deriving from o-hydroxyazodyestufi's by treating the o-hydroxyazodyestufi's. from diazotized 1 hydroxynaphthalene-8sulphamide-2-amino-4=-sulphonic acid and naphthols with the oxides, hydroxides and salts of trivalent chromium.

6. As new products the herein described new compounds of a group of metals comprising copper and chromium deriving from the o-hydroxyazodyestufl's prepared from diazotized l-hydroxynaphthalene-8-sulphamide-Q-amino 4-sulphonic acid and coupling components, which products form redbrown to black powders, dissolvingin waterto solutions with red to greenish-blue colorations and red-orange to blackish-blue colorations by addition of caustic soda, dyeing wool in an acid bath bluish-red to greenish-blue fast tints.

7. As new products the herein described new chromium compounds deriving from the o-hydroxyazodyestufis repared fromcdiazotized 1 hydroxynapht 1alene-8 sulphamide- 2-amino-4-sulphonic acid and coupling components, which products form red-brown to black powders, dissolving in water to solutions with bluish-red to greenish-blue colorations and red-orange to violet colorations by'- addition of caustic soda, dyeing wool in an acid bath bluish-pink to greenish-blue fast tints.

-8. As new products the herein described new chromium compounds deriving from the i o-hydroxyazodyestufi's repared from diazotized l-hydroxynapht alene-8-sulphamid'e- 2-amino-4-su1ph0nic acid and naphthols, which products form violet-brown .to black powders, dissolving in water to solutions with bluish-violet to greenish-blue colorations and red-violet toviolet colorations by addition of caustic soda, dyeing wool in an greenish-blue fastt1nts.' r

9. Material dyed with the dyestuffs of claimfi. 7

1 0. Material dyed with the dyestuffs of claim 7.

11. Material-dyed with the dyestufl's of claim 8. a p

In witness whereof we have hereunto signed our names this 20th day of February,

. FRITZ STRAUB. r v

HERMANN SCHNEIDER-- ios 

